header{
    top: 0;
    z-index: 1;

.nav{
    padding: 10px;
    padding-left: 15px;
    padding-right: 15px;
    input{
        padding-left: 30px;
        height: 35px;
        width: 70%;
        border-radius: 5px;
        border: none;
        background-color: #ececec;
    }
    .btn{
        width: 15%;
        height: 35px;
        border-radius: 5px;
        border: none;
    }
    .iconfont{
        left: 15px;
        top: 14px;
    }
}
.select{
    padding: 15px;
}
}
main{
    .person{
        img{
            width: 50px;
            height: 50px;
        }
    }
}
footer {
    bottom: 0;
    z-index: 2;
  }